/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.it.schema;

import org.apache.iotdb.it.env.ConfigFactory;
import org.apache.iotdb.it.env.EnvFactory;
import org.apache.iotdb.it.framework.IoTDBTestRunner;
import org.apache.iotdb.itbase.category.ClusterIT;
import org.apache.iotdb.rpc.TSStatusCode;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.sql.*;

import static org.apache.iotdb.itbase.constant.TestConstant.TIMESTAMP_STR;
import static org.apache.iotdb.itbase.constant.TestConstant.count;
import static org.junit.Assert.fail;

@RunWith(IoTDBTestRunner.class)
@Category({ClusterIT.class})
public class IoTDBDeleteTimeseriesIT {

    private long memtableSizeThreshold;

    private Statement statement;
    private Connection connection;

    @Before
    public void setUp() throws Exception {
        memtableSizeThreshold = ConfigFactory.getConfig().getMemtableSizeThreshold();
        ConfigFactory.getConfig().setMemtableSizeThreshold(2);

        EnvFactory.getEnv().initBeforeTest();

        connection = EnvFactory.getEnv().getConnection();
        statement = connection.createStatement();
    }

    @After
    public void tearDown() throws Exception {
        statement.close();
        connection.close();
        EnvFactory.getEnv().cleanAfterTest();
        ConfigFactory.getConfig().setMemtableSizeThreshold(memtableSizeThreshold);
    }

    @Test
    public void deleteTimeseriesAndCreateDifferentTypeTest() throws Exception {
        String[] retArray = new String[]{"1,1,", "2,1.1,"};
        int cnt = 0;

        statement.execute(
                "create timeseries root.turbine1.d1.s1 with datatype=INT64, encoding=PLAIN, compression=SNAPPY");
        statement.execute(
                "create timeseries root.turbine1.d1.s2 with datatype=INT64, encoding=PLAIN, compression=SNAPPY");
        statement.execute("INSERT INTO root.turbine1.d1(timestamp,s1,s2) VALUES(1,1,2)");

        try (ResultSet resultSet = statement.executeQuery("SELECT s1 FROM root.turbine1.d1")) {
            ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
            while (resultSet.next()) {
                StringBuilder builder = new StringBuilder();
                for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
                    builder.append(resultSet.getString(i)).append(",");
                }
                Assert.assertEquals(retArray[cnt], builder.toString());
                cnt++;
            }
        }
        statement.execute("DELETE timeseries root.turbine1.d1.s1");
        statement.execute(
                "create timeseries root.turbine1.d1.s1 with datatype=DOUBLE, encoding=PLAIN, compression=SNAPPY");
        statement.execute("INSERT INTO root.turbine1.d1(timestamp,s1) VALUES(2,1.1)");
        statement.execute("FLUSH");

        try (ResultSet resultSet = statement.executeQuery("SELECT s1 FROM root.turbine1.d1")) {
            ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
            while (resultSet.next()) {
                StringBuilder builder = new StringBuilder();
                for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
                    builder.append(resultSet.getString(i)).append(",");
                }
                Assert.assertEquals(retArray[cnt], builder.toString());
                cnt++;
            }
        }

        //    EnvironmentUtils.restartDaemon();
        //
        //    try (Connection connection = EnvFactory.getEnv().getConnection();
        //        Statement statement = connection.createStatement()) {
        //      boolean hasResult = statement.execute("SELECT * FROM root.**");
        //      Assert.assertTrue(hasResult);
        //    }
    }

    @Test
    public void deleteTimeseriesAndCreateSameTypeTest() throws Exception {
        String[] retArray = new String[]{"1,1,", "2,5,"};
        int cnt = 0;

        statement.execute(
                "create timeseries root.turbine1.d1.s1 with datatype=INT64, encoding=PLAIN, compression=SNAPPY");
        statement.execute(
                "create timeseries root.turbine1.d1.s2 with datatype=INT64, encoding=PLAIN, compression=SNAPPY");
        statement.execute("INSERT INTO root.turbine1.d1(timestamp,s1,s2) VALUES(1,1,2)");

        try (ResultSet resultSet = statement.executeQuery("SELECT s1 FROM root.turbine1.d1")) {
            ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
            while (resultSet.next()) {
                StringBuilder builder = new StringBuilder();
                for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
                    builder.append(resultSet.getString(i)).append(",");
                }
                Assert.assertEquals(retArray[cnt], builder.toString());
                cnt++;
            }
        }
        statement.execute("DELETE timeseries root.turbine1.d1.s1");
        statement.execute(
                "create timeseries root.turbine1.d1.s1 with datatype=INT64, encoding=PLAIN, compression=SNAPPY");
        statement.execute("INSERT INTO root.turbine1.d1(timestamp,s1) VALUES(2,5)");
        statement.execute("FLUSH");

        try (ResultSet resultSet = statement.executeQuery("SELECT s1 FROM root.turbine1.d1")) {
            ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
            while (resultSet.next()) {
                StringBuilder builder = new StringBuilder();
                for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
                    builder.append(resultSet.getString(i)).append(",");
                }
                Assert.assertEquals(retArray[cnt], builder.toString());
                cnt++;
            }
        }

        //    EnvironmentUtils.restartDaemon();
        //
        //    try (Connection connection = EnvFactory.getEnv().getConnection();
        //        Statement statement = connection.createStatement()) {
        //      boolean hasResult = statement.execute("SELECT * FROM root.**");
        //      Assert.assertTrue(hasResult);
        //    }
    }

    @Test
    public void deleteTimeSeriesMultiIntervalTest() {
        String[] retArray1 = new String[]{"0,0"};

        try {
            String insertSql = "insert into root.sg.d1(time, s1) values(%d, %d)";
            for (int i = 1; i <= 4; i++) {
                statement.execute(String.format(insertSql, i, i));
            }
            statement.execute("flush");

            statement.execute("delete from root.sg.d1.s1 where time >= 1 and time <= 2");
            statement.execute("delete from root.sg.d1.s1 where time >= 3 and time <= 4");

            int cnt = 0;
            try (ResultSet resultSet =
                         statement.executeQuery(
                                 "select count(s1) from root.sg.d1 where time >= 3 and time <= 4")) {
                while (resultSet.next()) {
                    String ans =
                            resultSet.getString(TIMESTAMP_STR)
                                    + ","
                                    + resultSet.getString(count("root.sg.d1.s1"));
                    Assert.assertEquals(retArray1[cnt], ans);
                    cnt++;
                }
                Assert.assertEquals(retArray1.length, cnt);
            }
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.getMessage());
        }
    }

    @Test
    public void deleteTimeSeriesAndAutoDeleteDeviceTest() throws Exception {
        String[] retArray1 = new String[]{"0,4,4,4,4"};

        String insertSql = "insert into root.sg.d1(time, s1, s2, s3, s4) values(%d, %d, %d, %d, %d)";
        for (int i = 1; i <= 4; i++) {
            statement.execute(String.format(insertSql, i, i, i, i, i));
        }

        int cnt = 0;
        try (ResultSet resultSet =
                     statement.executeQuery(
                             "select count(s1), count(s2), count(s3), count(s4) from root.sg.d1")) {
            while (resultSet.next()) {
                StringBuilder ans = new StringBuilder(resultSet.getString(TIMESTAMP_STR));
                for (int i = 1; i <= 4; i++) {
                    ans.append(",").append(resultSet.getString(count("root.sg.d1.s" + i)));
                }
                Assert.assertEquals(retArray1[cnt], ans.toString());
                cnt++;
            }
            Assert.assertEquals(retArray1.length, cnt);
        }

        statement.execute("delete timeseries root.sg.d1.*");
        try (ResultSet resultSet = statement.executeQuery("select * from root.sg.d1")) {
            Assert.assertFalse(resultSet.next());
        }

        try (ResultSet resultSet = statement.executeQuery("show timeseries root.sg.d1.*")) {
            Assert.assertFalse(resultSet.next());
        }

        try (ResultSet resultSet = statement.executeQuery("show devices root.sg.d1")) {
            Assert.assertFalse(resultSet.next());
        }
    }

    @Test
    public void deleteTimeSeriesCrossSchemaRegionTest() throws Exception {
        String[] retArray1 = new String[]{"0,4,4,4,4"};

        String insertSql = "insert into root.sg.d%d(time, s1, s2) values(%d, %d, %d)";
        for (int i = 1; i <= 4; i++) {
            for (int j = 1; j <= 4; j++) {
                statement.execute(String.format(insertSql, j, i, i, i));
            }
        }

        int cnt = 0;
        try (ResultSet resultSet = statement.executeQuery("select count(s1) from root.sg.*")) {
            while (resultSet.next()) {
                StringBuilder ans = new StringBuilder(resultSet.getString(TIMESTAMP_STR));
                for (int i = 1; i <= 4; i++) {
                    ans.append(",").append(resultSet.getString(count("root.sg.d" + i + ".s1")));
                }
                Assert.assertEquals(retArray1[cnt], ans.toString());
                cnt++;
            }
            Assert.assertEquals(retArray1.length, cnt);
        }

        statement.execute("delete timeseries root.sg.*.s1");
        try (ResultSet resultSet = statement.executeQuery("select s1 from root.sg.*")) {
            Assert.assertFalse(resultSet.next());
        }

        try (ResultSet resultSet = statement.executeQuery("show timeseries root.sg.*.s1")) {
            Assert.assertFalse(resultSet.next());
        }

        cnt = 0;
        try (ResultSet resultSet = statement.executeQuery("select count(s2) from root.sg.*")) {
            while (resultSet.next()) {
                StringBuilder ans = new StringBuilder(resultSet.getString(TIMESTAMP_STR));
                for (int i = 1; i <= 4; i++) {
                    ans.append(",").append(resultSet.getString(count("root.sg.d" + i + ".s2")));
                }
                Assert.assertEquals(retArray1[cnt], ans.toString());
                cnt++;
            }
            Assert.assertEquals(retArray1.length, cnt);
        }
    }

    @Test
    public void deleteTimeSeriesCrossStorageGroupTest() throws Exception {
        String[] retArray1 = new String[]{"0,4,4,4,4"};

        String insertSql = "insert into root.sg%d.d1(time, s1, s2) values(%d, %d, %d)";
        for (int i = 1; i <= 4; i++) {
            for (int j = 1; j <= 4; j++) {
                statement.execute(String.format(insertSql, j, i, i, i));
            }
        }

        int cnt = 0;
        try (ResultSet resultSet = statement.executeQuery("select count(s1) from root.*.d1")) {
            while (resultSet.next()) {
                StringBuilder ans = new StringBuilder(resultSet.getString(TIMESTAMP_STR));
                for (int i = 1; i <= 4; i++) {
                    ans.append(",").append(resultSet.getString(count("root.sg" + i + ".d1.s1")));
                }
                Assert.assertEquals(retArray1[cnt], ans.toString());
                cnt++;
            }
            Assert.assertEquals(retArray1.length, cnt);
        }

        statement.execute("delete timeseries root.*.d1.s1");
        try (ResultSet resultSet = statement.executeQuery("select s1 from root.*.*")) {
            Assert.assertFalse(resultSet.next());
        }

        try (ResultSet resultSet = statement.executeQuery("show timeseries root.*.*.s1")) {
            Assert.assertFalse(resultSet.next());
        }

        cnt = 0;
        try (ResultSet resultSet = statement.executeQuery("select count(s2) from root.*.*")) {
            while (resultSet.next()) {
                StringBuilder ans = new StringBuilder(resultSet.getString(TIMESTAMP_STR));
                for (int i = 1; i <= 4; i++) {
                    ans.append(",").append(resultSet.getString(count("root.sg" + i + ".d1.s2")));
                }
                Assert.assertEquals(retArray1[cnt], ans.toString());
                cnt++;
            }
            Assert.assertEquals(retArray1.length, cnt);
        }

        statement.execute("delete timeseries root.sg1.d1.s2, root.sg2.**");
        try (ResultSet resultSet = statement.executeQuery("select s2 from root.sg1.*")) {
            Assert.assertFalse(resultSet.next());
        }

        try (ResultSet resultSet = statement.executeQuery("show timeseries root.sg2.*.s2")) {
            Assert.assertFalse(resultSet.next());
        }

        retArray1 = new String[]{"0,4,4"};
        cnt = 0;
        try (ResultSet resultSet = statement.executeQuery("select count(s2) from root.*.*")) {
            while (resultSet.next()) {
                StringBuilder ans = new StringBuilder(resultSet.getString(TIMESTAMP_STR));
                for (int i = 3; i <= 4; i++) {
                    ans.append(",").append(resultSet.getString(count("root.sg" + i + ".d1.s2")));
                }
                Assert.assertEquals(retArray1[cnt], ans.toString());
                cnt++;
            }
            Assert.assertEquals(retArray1.length, cnt);
        }
    }

    @Test
    public void deleteTimeSeriesWithMultiPatternTest() throws Exception {
        String[] retArray1 = new String[]{"0,4,4,4,4"};

        String insertSql = "insert into root.sg%d.d1(time, s1, s2) values(%d, %d, %d)";
        for (int i = 1; i <= 4; i++) {
            for (int j = 1; j <= 4; j++) {
                statement.execute(String.format(insertSql, j, i, i, i));
            }
        }

        int cnt = 0;
        try (ResultSet resultSet = statement.executeQuery("select count(s1) from root.*.d1")) {
            while (resultSet.next()) {
                StringBuilder ans = new StringBuilder(resultSet.getString(TIMESTAMP_STR));
                for (int i = 1; i <= 4; i++) {
                    ans.append(",").append(resultSet.getString(count("root.sg" + i + ".d1.s1")));
                }
                Assert.assertEquals(retArray1[cnt], ans.toString());
                cnt++;
            }
            Assert.assertEquals(retArray1.length, cnt);
        }

        statement.execute("delete timeseries root.*.d1.s1, root.*.d1.s2");
        try (ResultSet resultSet = statement.executeQuery("select * from root.*.*")) {
            Assert.assertFalse(resultSet.next());
        }

        try (ResultSet resultSet = statement.executeQuery("show timeseries root.*.*.*")) {
            Assert.assertFalse(resultSet.next());
        }
    }

    @Test
    public void deleteTimeSeriesAndReturnPathNotExistsTest() throws Exception {
        try {
            statement.execute("delete timeseries root.**");
        } catch (SQLException e) {
            Assert.assertTrue(
                    e.getMessage()
                            .contains(
                                    TSStatusCode.PATH_NOT_EXIST.getStatusCode()
                                            + ": Timeseries [root.**] does not exist or is represented by schema template"));
        }

        String[] retArray1 = new String[]{"0,4,4,4,4"};

        String insertSql = "insert into root.sg%d.d1(time, s1, s2) values(%d, %d, %d)";
        for (int i = 1; i <= 4; i++) {
            for (int j = 1; j <= 4; j++) {
                statement.execute(String.format(insertSql, j, i, i, i));
            }
        }

        int cnt = 0;
        try (ResultSet resultSet = statement.executeQuery("select count(s1) from root.*.d1")) {
            while (resultSet.next()) {
                StringBuilder ans = new StringBuilder(resultSet.getString(TIMESTAMP_STR));
                for (int i = 1; i <= 4; i++) {
                    ans.append(",").append(resultSet.getString(count("root.sg" + i + ".d1.s1")));
                }
                Assert.assertEquals(retArray1[cnt], ans.toString());
                cnt++;
            }
            Assert.assertEquals(retArray1.length, cnt);
        }

        try {
            statement.execute("delete timeseries root.*.d1.s3");
        } catch (SQLException e) {
            Assert.assertTrue(
                    e.getMessage()
                            .contains(
                                    TSStatusCode.PATH_NOT_EXIST.getStatusCode()
                                            + ": Timeseries [root.*.d1.s3] does not exist or is represented by schema template"));
        }
    }

    @Test
    public void dropTimeseriesTest() throws Exception {
        String[] retArray = new String[]{"1,1,", "2,1.1,"};
        int cnt = 0;

        statement.execute(
                "create timeseries root.turbine1.d1.s1 with datatype=INT64, encoding=PLAIN, compression=SNAPPY");
        statement.execute(
                "create timeseries root.turbine1.d1.s2 with datatype=INT64, encoding=PLAIN, compression=SNAPPY");
        statement.execute("INSERT INTO root.turbine1.d1(timestamp,s1,s2) VALUES(1,1,2)");

        try (ResultSet resultSet = statement.executeQuery("SELECT s1 FROM root.turbine1.d1")) {
            ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
            while (resultSet.next()) {
                StringBuilder builder = new StringBuilder();
                for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
                    builder.append(resultSet.getString(i)).append(",");
                }
                Assert.assertEquals(retArray[cnt], builder.toString());
                cnt++;
            }
        }
        statement.execute("DROP timeseries root.turbine1.d1.s1");
        statement.execute("FLUSH");

        try (ResultSet resultSet = statement.executeQuery("show timeseries root.turbine1.d1")) {
            Assert.assertFalse(resultSet.next());
        }
    }
}
